Gear for moving the bottoms of dumping receptacles



. 11 474 785 NOV. 20 P KRUGER 9 9 GEAR FOR MOVING THE BOTTOMS OF DUMPINGRECEPTACLES Filed May 18, 1922 Patented Nov. 2%, i923.

PAUL KRICFGER, OF ESSEN, GERMANY, ASSIGNOB TO FRIED. KRUP PAKTIENGESELL- SCHAFT, OF ESSEN-ON-THE RUE-IR, GERMANY.

GEAR FOR MOVING THE BOTTOMS OF DUBIPING BECEPT'ACLES.

Application filed May 18, 1922. Serial No. 561,987.

To all whomit may concern:

Be it known that 1, PAUL Kniicnn, residing at Essen, Germany, a citizenof the German Republic, have invented a certain new and usefulImprovement in Gears for Moving the Bottoms of Dumping Receptacles, ofwhich the following is a specification.

This invention relates to gears for moving the tiltably mounted bottomof dumping receptacles, the driving shaft of which gears carries afreely rotatable hand lever which is adapted to be coupled with thedriving shaft in each direction of rotation.

The invention has for its object to provide agear of the characterstated in which the stroke of the hand lever is limited by a to and fromovement to a small space, so

that thelever can be given av favorable position of operation and maderelatively long without interfering in its movement with the bottom ofthe receptacle.

The accompanying drawing illustrates, by way of example, an embodimentof the sub ject-matter of the invention.

Fig. 1 is a side elevation of the gear in a position which it takesinthe loading posi tion of the dumping receptacle;

Fig. 2 is asection on the line 2-2 of Fig. 1, seen from the left;

Fig. 3 is an elevation, similar'to Fig. 1, i

of the gear in an intermediate position;

Fig. dis an elevation corresponding to Fig. 3 and showing anotherintermediate position;

Fig. 5 is an elevation, similar to Fig. 1, of the gear inaposition whichit takes in the dumping position of the receptacle; and

Fig. 6 is an elevation, similar to Fig. 5, of the gear in anintermediate position.

Referring now to the drawing, a: designates the driving shaft whichcarries an ratchet wheel 6 having successively arranged ratchet teeth b-b and b b of different shape and adapted to lock the driving shaftpartly against rotation in one direction and partly against rotation inthe other direction.

Arranged for rotation on the driving shaft a is also a hand lever c.Rotatably mounted at the same is a pin 0K on which double pawl 71. isfastened by means of a wedge g (Fig. 2). The pawl it possesses two hookse and f which are adapted to enter alternately into engagement with theteeth of the ratchet wheel Z) according to the direction of rotationdesired.

The reversing of the pawl is performed by means of a lever 6 arranged onthe pin (Z. The pin (Z is provided with a nose 7a which engages a groove39 of the lever 71 with a. certain lost motion.

The lever e' is of such a shape that its dead weight secures the properposition of engagement between the pawl it and the ratchet wheel I) inone direction of rotation or the other in all positions of the handlever 0 between two stops Z, according as the centre of gravity of thelever 71 lies at the right or at the left of the axis of the pin (Z. Thelever 6 further possesses a locking portion in the form of a hook inwhich is adapted to grip behind a stopn fixed to the underframe, butonlyin case a notch 0, arranged between the teeth I) and Z2 of the ratchetwheel Z), is in engagement with the hook f of the pawl h.

In order to dump the receptacle, the lever i is at first manually liftedfrom its closing position (Fig.1) until its hook mwill have disengagedfrom the stop a (Fig. 3).

In executing this operation, the hand lever c has to be lifted for asmall amount because of the notch o and the hook f being undercut; assoon as the lever i will have been fully reversed (Fig. l), the handlever '0 will drop back into its initial position. It is therebyattained that the hook m cannot fall back again behind the stop 42- incase the lever i should be thrown back by some reason or the other, suchas e. g. by a heavy shock produced on the lever i striking on the handlever c.

In reversing the lever 71 the pawl h is taken along with it until thelower hook 6 will place itself 'against the ratchet tooth b (Fig. 4).

The opening of the dumping receptacle can now be performed by repeatedlylifting the hand lever a into the position indicated by broken lines inFigs. 3-6, thereby causing the hook e of the pawl it to engagesuccessively the teeth 6*, b b b b and b Any leading of the drivingshaft a in the sense of the arrow indicated in Fig. 4:, will remainwithout any influence on the hand lever. In the dumping position (Fig.5), the driving shaft a and, accordingly, the bottom are locked againstswinging back automatically.

For the purpose of closing the receptacle the lever i is reversed, asindicated in Fig. 6. By rocking the hand lever the receptacle is closed.A loading of the driving shaft (4, which is now rotating in the sense ofthe arrow indicatedinflFig. 6, will bewithout any influence on the handlever also in this direction of rotation. The driving shaft will finallytake again the position according to Fig. 1, in which the upper hook fhas dropped into the notch 0 and the hook we automatically grips behindthe stop a.

The receptacle is thus locked against unintended: opening.

7 Claims:

1. In a gear for moving the bottom of dumping receptacles, comprising adriving shaft and a handlever mounted for rotation on said shaft andadapted to be coupled with hand lever with the driving shaft through theintermediary of the said coupling memher in a'limit position in thesense of theopening movement and in a second limit position in the senseof the closing movement, and being further adapted to lock the hand i 1lever and the driving shaft against a' rotation in the sense of theopening movement in in third limit position.

2. In a gear for moving the bottom of dumpingreceptacles, comprising adriving 1 shaft and a hand lever mounted for rotation on {said shaft andadapted to'be coupled with the same in both directionsofrot'ation, areversing member swingingly mounted on the hand lever, a coupling membermounted on the hand lever forrotation and co-operation with the saidreversingmember, coupling means between the reversing member and thecoupling member, said means allowing a slight relative angular motionbetween the two members the reversing member being adapted to couple thehand lever with the driving shaft through the intermediary of the saidcou 'nling member in a limit position in the sense of the openingmovement and in a second limit position in the sense of the closingmovement, and being further adapted to lock the hand lever and thedriving shaft against a rotation in the sense of the opening movement ina third limit po sition. V

' 3. In a gear for moving the bottom of dumping receptacles,comprising adriving shaft, a ratchet wheel rigidly connected to this shaft and ahand lever mounted for rotation on this shaft and" adapted to be coupledwith the ratchet wheel in both directions of rotation, a reversingmember swingingly mounted on the hand lever, a

double pawl mounted for rotation on the hand lever andconnected withthe-reversing member by coupling means, the reversing member beingadapted to couple the hand lever with the ratchet wheel of the drivingshaft through the intermediary of the double pawl, the teeth of theratchet wheel being of a shape such as to permit a lead of theratchetwheel with relation to the hand lever in the'respective couplingdirections, a notchbeing provided on the ratchet wheel, and thereversing member possessing a locking portion for engagement" with astop provided at. the underframe of the dumping receptacle, the saidnotch of the ratohet wheel being adapted to allow the pawl and thereversing member to take a position permitting the last-mentionedengagement to take place.

The foregoing specification signed at Essen, Germany, this 29th day ofApril, 1922.

PAUL KRUGER. I

